# Factoring by quadratic trinomials 6+11x-10x² ano po sagot ? pls mhina ko sa mth ehh thanks po :))

1

2014-07-22T18:26:39+08:00
To factor that out,
you should transform that first into standard form.
which is
ax² + bx + c
then locate the three numbers. (a,b,& c)
Let's see...
That would be -10x²+11x+6 (always put in detail their signs)
so now,

a = -10
b = 11
c = 6

And then, two start off, you have to find ac
meaning, the product of "a" and "c" and that would be??

-----
ac = -60
then find the factors of -60
, which when added together becomes b.

Let's say the factors are
-4, & 15
or
-15, & 4

-15 + 4 = -11
or
-4 + 15
= 11 "Ding! we have a winner!"
btw we can also look at it as, 15 +(-4) = 11 or 15-4 = ﻿11
So now we can say that

15x - 4x = 11x                     now substitute the factors into the equation

-10x² +15x - 4x + 6            ﻿ group the 2 terms on the left, and the 2 terms on the right.

(-
﻿10x² +15x)+﻿(-4x+6﻿)            and then simply factor out both.

-5x
﻿(﻿ 2x - 3) + (-2)(2x - 3)
﻿﻿﻿-5x( 2x-3) -2(2x - 3)              ﻿simplify the common multiple, "(2x-3)"

﻿
﻿"(-5x-2)(2x-3)"

I believe we're done. ﻿
﻿﻿﻿﻿I hope it was clear, this is like my first serious answer. :D